dirt bike suggestions?

I'm looking for a "new to me" dirt bike. I'm currently on a DRZ400 which I enjoy but I'd like something a little quicker/lighter. Most of my riding now is single track trails and a little forest service roads. I've also been going to a beginner track with small jumps.
Ideally, I'd like a 4 stroke because we do a lot of overnight/camping rides that require fill ups and I'd rather not have to worry about mixing oil & gas.

Been looking at the KTM EXC 350 but that bike is crazy expensive and hard to find used.

Any ideas? I really don't want to own two bikes, well my wife doesn't want me to own two bikes